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ANTONIO. F. SMITH,` OF ELLSWORTH, MAINE.

Letters Patent No. 73,762,dated January 28, 1868.

IMPROVEMENT IN STOVE-DRUMS.

To ALL PERsoNsTo WHoM THEsE PRESENTS SHALL' COME:

Be it known that I, ANTONIO F. SMITH, of Ellsworth, in the county ofHancock, and State ofMaine, have invented a new and useful d'entilator`and-Spark-Arrester, to be applied to the smoke-discharge pipe of' astove;A and I do hereby declare the same to be iully described .in thefollo'wing speccalti'on, and represented, in 15h-ex? accompanyingdrawings, of which- Figures 1 and 2 are vertical sections, and

Figure 3 a horizontal section of it. p

In such drawings, A denotes la square box, .provided with atruste-conical bottom, Whose opening, 'a,'ispro vided with a cylindricalneck, 6, to enter and t to the smoke-discharge pipe of a stove. Overthis bottom,"and projecting therefrom, isa hollow, conic, pyramidalfrustum, B, whichis open at top, there being `a space between such top'and the. top plate e of the box A. A concave-convex disk ,orspark-deiiector, D, is arranged within the frustum B, orv with respecttorit and the conical bottom'of the box A, in manner-substantially'asrepre. sented in rigs 1 and 2,' it being supported by arms, ol, extendedfrom it to the box vA. There is an eductionpassage vor neck, 1E,leadin'g'out ofone side of the box A', and against the other oroppositeside is a long chamber, F, extending'across 4the box,and'bei-ngprovided with openings, e e, leading into it, such openingshaving a slide valve or registe1,f, applied to them, the handle or knobof the valve being shown at g. There extend from and open out of thechamber F, two pipes, G G, which go through thebox A, and lead into thedischarge-opening E thereof. I p i Y The apparatus so made isintended'to be applied to the smoke-discharge ilue oi' a stove in suchmanner as to .cause smoke, after escaping from the stove, to passthrough its discharge-pipe, and into and through the apparatus,.inmanner as exhibited by the arrows in figs. 1 and 2. By the action of thecleilectorD many ofthe sparkswill be arrested,`while the smoke, with therest, will be deflected Aaround the edge of the detiector, and caus'cdtopass into the conepyramidalfrustum B.v This frustum will also operateto arrest the sparks, many. of which, in' passing out of thedischarging-mouth of the frustum, will fall into the box A, or the spacethereof` surronnding-the frusturn.` i

The pipesl G G, when heated by the smoke, will cause currents of air toescape from the apartment in which the stove maybe situated, and thusthe room will be ventilated and freedA of any foul' air, gas, or smoke.`'lhe soot and carbonaceous matters in the smoke will be intercepted,and what is notthrown back iutothe pipe by the detlector will passtintothat part of the box A above the cone pyramidal frustum, where it willbe deposited, and most of it will be burned. The top of the box A,Iapply to the rest of .the box by hinges, Z, or by other means, by whichsuch top lmay 'be removed from the box, as occasion may require, inorder to enable access to be had to the box for removal of the asheswhich may accumulate therein. The transverse chamber, with its registeror airwalve, enables air to be-supplied to both` the air-pipes, and inquantities as may be desirable from time to time. I v I My presentinvention is a great improvement with reference to that patented. bymein Letters Patent, No. 70,037, dated October 2'2, 1867, as iti enablesme to avoid the employment of the foramiious or perforated partitionsincident to such, the holes of which were soou liable to become'chokedby soot'and cinders.

What I claim as my present invention, is y The arrangement as welles'the combination of the hollow frustum B with tthe deliector D, and thebox -A provided with induction and eduction-passages or conduits b E,arranged in it as speciiied.

l I also claim the arrangement as well as the combination oftheauxiliary airehamber F, and its air-register or valve, and opening oropenings with the henri-,the frustum B, or the said frustum and itsdeliector D, the` whole being substantially as specified.

ANTONIO F. SMITH. Witnesses A. F. DRINKWATEE, ALBERT L. JONES.

